Brazilian winger Antony will wear 21 following his permanent transfer from Ajax, while Slovakian goalkeeper Dubravka will have 31 on his back during his season-long loan from Newcastle United.
The announcement comes on the eve of the Reds' clash with Premier League rivals Arsenal at Old Trafford, this Sunday afternoon at 16:30 BST. Both of our new arrivals will be eligible to play in that eagerly anticipated fixture.